Which amino acids are present in histones?
Lysine and histidine
Valine and histidine
Arginine and lysine
Arginine and histidine
Who used the word "chromosome''
$A$ : $SNPs$-pronounced "snips" are common in human genome.
$R$ : It is minute variations that occurs at a frequency of one in every $300$ bases
$A$: Kornberg enzyme is associated with the removal of primers and thyminedimer.
$R$: $DNA$ polymersase I does exonuclease activity in $5^{\prime} \rightarrow 3^{\prime}$ and $3^{\prime} \rightarrow 5^{\prime}$ directions.
Which of the following group of codons is called stop codons ?